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関連する概念動画

Atomic Nuclei: Larmor Precession Frequency01:11

Atomic Nuclei: Larmor Precession Frequency

3.5K
The earth's gravitational field produces a 'twisting force' perpendicular to the angular momentum of a spinning mass (such as a spinning top) that causes the mass to 'wobble' around the gravitational field axis in a phenomenon called precession. Similarly, the magnetic moment (μ) of a spinning nucleus precesses due to an external magnetic field directed along the z-axis. The precession of the magnetic moment vector about the magnetic field is called Larmor precession,...
3.5K
Atomic Absorption Spectroscopy: Atomization Methods01:25

Atomic Absorption Spectroscopy: Atomization Methods

1.8K
Atomic Absorption Spectroscopy (AAS) atomizes samples through flame atomization or electrothermal atomization. Flame atomization typically involves a nebulizer and spray chamber assembly to combine the sample with a fuel–oxidant mixture, creating a fine aerosol mist that enters a burner. Typically, the fuel and oxidant are combined in an approximately stoichiometric ratio. However, for atoms that are easily oxidized, a fuel-rich mixture may be more advantageous. Only about 5% of the...
1.8K
Atomic Absorption Spectroscopy: Interference01:25

Atomic Absorption Spectroscopy: Interference

2.3K
Interference leads to systematic error in atomic absorption (AA) measurements by enhancing or diminishing the analytical signal or the background. These interferences can be grouped into three main categories: spectral interference, chemical interference, and physical interference.
Spectral interference occurs when signals from other elements or molecules overlap with the analyte signal, falsely elevating or masking the analyte's absorbance. This interference can be corrected using Zeeman,...
2.3K
Atomic Emission Spectroscopy: Instrumentation01:22

Atomic Emission Spectroscopy: Instrumentation

1.5K
The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers.  Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
1.5K
Atomic Emission Spectroscopy: Interference01:30

Atomic Emission Spectroscopy: Interference

785
In atomic emission spectroscopy (AES), high-temperature atomizers excite a broad range of elements and molecules that generate complex emissions from sources such as oxides, hydroxides, and flame combustion products in the flame or plasma. Several strategies can be employed to minimize spectral interferences caused by overlapping emission lines or bands. These include increasing instrument resolution, choosing alternative emission lines, optimally placing the detector in low-background regions,...
785
Atomic Emission Spectroscopy: Lab01:29

Atomic Emission Spectroscopy: Lab

873
AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...
873

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関連する実験動画

Updated: May 4, 2026

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
12:19

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

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膨張する超冷たい原子雲における空間量子ノイズ干渉計.

Simon Fölling1, Fabrice Gerbier, Artur Widera

  • 1Institut für Physik, Johannes Gutenberg-Universität, Staudingerweg 7, D-55099 Mainz, Germany.

Nature
|March 26, 2005
PubMed
まとめ

ハンベリー・ブラウンとトゥイス (HBT) の相関は,超冷たい原子における量子統計を明らかにする. この先駆的な実験では,空間 HBT 干渉計を用いて,モットの断熱器相を検出し,密度の変動における強力な量子相関を示しています.

科学分野:

  • 量子物理学とは,量子物理学のことです.
  • 原子物理学 原子物理学とは
  • 凝縮物質物理学 凝縮物質物理学

背景:

  • ハンベリー・ブラウン・アンド・トゥイス (HBT) 効果は,量子統計を用いて粒子源の性質を調査するために,ノイズ相関を用いて実証しています.
  • HBT相関とフェルミオン相関は,量子光学,核,素粒子物理学で広く応用されています.
  • 空間 HBT 干渉計は,強く相関する超冷たい原子相における隠された秩序を調査するために提案されています.

研究 の 目的:

  • ルビジアムボースガスのモット断熱器相に空間的HBT干渉測定を行う.
  • 光学格子から放出される膨張する原子雲の量子相関の存在と性質を調査する.
  • 超冷たい原子における量子相の探査のためのHBT相関の有用性を実証する.

主な方法:

  • 空間的なハンベリー・ブラウン・アンド・トゥイス (HBT) 干渉計を用いた.
  • 光学格子トラップから放出された膨張中の超冷たいルビジウムボゼガスの密度の変動を測定した.
  • 区別がつかない粒子の量子干渉に基づく相関を分析した.

主要な成果:

  • 膨張する原子雲における密度変動の間の強い周期的量子相関を観測した.

さらに関連する動画

Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization
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Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization

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Measurement of the Compressibility of Cell and Nucleus Based on Acoustofluidic Microdevice
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Measurement of the Compressibility of Cell and Nucleus Based on Acoustofluidic Microdevice

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関連する実験動画

Last Updated: May 4, 2026

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
12:19

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

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Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization
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Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization

Published on: August 6, 2018

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Measurement of the Compressibility of Cell and Nucleus Based on Acoustofluidic Microdevice
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Measurement of the Compressibility of Cell and Nucleus Based on Acoustofluidic Microdevice

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  • これらの空間的相関が,底辺の格子順序を直接反映していることを示した.
  • 複数の波のHBT干渉効果を通して観察された相関を解釈した.

    • 結論:

    • 空間 HBT インターフェロメトリーは,超冷たい原子のモット断熱器相を成功裏に探査します.
    • この方法は,基本的な秩序を示す強力な量子相関を明らかにします.
    • この技術は,超冷たいボゾン・フェルミオン系における複雑な量子相を特定するための貴重なツールとなる.